Product Information KEMPEROL® 2K-PUR Work pack includes: Component A: Cream Formulation, Component B: Dark Brown Formulation Product Description KEMPEROL® 2K-PUR is a two-component, “odor-free,” UV-stable high performance seamless and self-terminating cold fluid-applied polyester reinforced solvent-free polyurethane membrane system. KEMPEROL® 2K-PUR membranes can be surfaced with polyurethane coating, light-reflective sand aggregate surfacing or other granular materials to match the appearance of the surrounding substrate. Composition & Materials A monolithic membrane is created in the field by combining the KEMPEROL® 2K-PUR two-part, coldapplied liquid polyurethane resin with KEMPEROL® polyester reinforcing fleece. Membrane may be applied using standard fleece available in 4, 8, 10, 13, 20, 27, and 41-inch nominal widths. Use KEMPEROL® 2K-PUR membranes are suitable for a wide range of interior and exterior waterproofing applications including mechanical rooms, plazas, roofs, planters, foundations and flashings. Limitations Interior or exterior applications of KEMPEROL® 2K-PUR membranes exposed to UV-light may yellow or discolor. Use of a polyurethane coating, light-reflective sand aggregate or other granular material surfacing is recommended where colorfast applications are required. KEMPEROL® 2K-PUR may be applied when the ambient temperature is 41 ºF (5 ºC) and rising, and the substrate temperature is a minimum of 5 degrees above the dew point. The maximum application temperature is approximately 86 ºF (30 ºC). Note: Viscosity increases with falling temperature. For temperatures below 50 ºF (10 ºC), KEMPEROL® A 2K-PUR Accelerator should be added to component A to reduce set time. Yield Using 165 Fleece: 38 s.f. (3.53 m2) per 12.5 kg work pack. Using AP (120) Fleece: 45 s.f. (4.20 m2) per 12.5 kg workpack. Note: All yields are approximate and may vary depending upon smoothness and absorbency of substrate. Storage Always store in cool and dry location. Do not store in direct sunlight or in temperatures below 35 ºF (1.7 ºC) or above 80 ºF (27 ºC). Approximate shelf life 12 months with proper storage. For best use, 24 hours before application, the material is to be acclimated at temperatures between 65-70 ºF (18-21 ºC). Precautions Surface Preparation Refer to KEMPEROL® Material Safety Data Sheet (MSDS) before using or handling. Priming After substrate preparation, temporary watertightness is quickly achieved with the application of KEMPERTEC® D Primer or EP Primer and temporary joint filler. Alternatively, the use of quick-dry KEMPERTEC® R or EP5 Primer may allow same-day membrane application. KEMPERTEC® primer All surfaces must be free from gross irregularities, loose, unsound or foreign material such as dirt, ice, snow, water, grease, oil, release agents, lacquers, or any other condition that would be detrimental to adhesion of the primer and membrane. This requires careful preparation of existing horizontal and vertical substrates; cracks are filled, expansion joints are prepared, flashings are removed or modified, and termination points are determined. Substrates and penetrations are prepared to rigorous industry standards, and may require scarifying, sandblasting or grinding in some cases to achieve a suitable substrate. Headquarters: Kemper System America, Inc. | 1200 North America Drive | West Seneca, NY 14224 Customer/Technical Service: Phone (800) 541-5455 | Fax (201) 767-4304 | [email protected] Component Properties Property Color Physical state Specific density Viscosity Flash point Component A Cream Liquid 1.25 5000 >100 ºC/212 ºF Membrane Properties Component B Dark Brown Liquid 1.22 50 >200 ºC/392 ºF may be brushed or rolled onto any clean and prepared surface. Allow primer to cure completely prior to application of the KEMPEROL® membrane. Mixing of Resin Note: Prior to opening the containers of KEMPEROL® 2K-PUR Resin, wear appropriate safety glasses and protect hands and wrists by wearing gauntlet-type neoprene gloves. Step 1: Mix resin Component A with a spiral KEMPEROL® agitator, until the liquid is a uniform color. If the ambient temperature is below 50 ºF (10 ºC), then 2K-PUR Accelerator, a cold weather additive, should be combined and mixed into the Component A. The accelerator should be mixed with the spiral agitator for 5 minutes or until both liquids are thoroughly blended. Physical Property Color Physical state Thickness (165 fleece) VOC Content Tensile strength @ break Elongation Tear resistance Puncture resistance Dimensional stability Water absorption Impact Resistance Water vapor transmission Usage time* Water resistant after* Solid to walk on after* Can be driven on after* Apply overburden after* Apply coating/surfacing after* Completely hardened* Crack spanning Short-term temperature resistance Values Yellow-Gray Cures to solid 70 mils 6 g/l 120 lb/in 50% 5.0 lbs. 150 lbs. 0.1% 2.2% Shore A:85 0.04 Perms 30 minutes 2 hours 48 hours 48 hours 2 days 16-48 hours 3 days 2 mm/0.08 inch 250 ºC/482 ºF * values obtained at 73°F, 50% relative humidity, may vary depending upon air flow, humidity and temperature. Step 2: Pour resin Component A into Component B and thoroughly mix the components with a clean spiral agitator. The Resin solution should be a uniform color, with no light or dark streaks present. NOTE: DO NOT break down workpacks into smaller quantities - mix the entire workpack. Application (165 Fleece) Step 1: After the Resin is mixed, apply approximately 4.5 gallons (16.9L) per 100 square feet (9 m2). The Resin should be rolled or brushed evenly onto the surface. Step 2: Then roll the KEMPEROL® Fleece directly into the Resin, avoiding any folds and wrinkles. Use the roller to work the resin into the fleece, saturating from the bottom up. The appearance of the fleece should be a light opaque gray-green with no white spots. White spots are indications of unsaturated fleece or lack of adhesion. It is important to correct these faults before the resin cures. Step 3: Add the top coat layer of Resin (approximately 2 gallons (7.5L) per 100 square feet (9 m2)) and finish the fleece’s saturation. Roll this final coating into the fleece, which will result in a glossy appearance. The fleece can only hold so much resin and all excess should be rolled forward to the unsaturated fleece. Any excess resin left on the top of the fleece will weather and peel off. The correct amount of Resin will completely saturate the Fleece and no white color will be visible. Surfacing KEMPEROL® 2K-PUR Membrane accepts a wide variety of KEMPERDUR® topcoats and aggregate surfacings for aesthetic or mechanical wear. The KEMPEROL® 2K-PUR membrane must be surfaced within 16-48 hours of membrane application to ensure proper bond between the membrane and surfacing. Disposal Cured 2K-PUR resin may be disposed of in standard landfills. This is accomplished by thoroughly mixing all components. Note: Uncured 2K-PUR resin is considered a hazardous material and must be handled as such, in accordance with local, state and federal regulations. Do not throw uncured resin away. Ordering Information Resin Component A & B Workpack: Item#: 327-47-025 Size: 0.51 US GAL (1.93L) • 2.5 kg 327-47-055 1.03 US GAL (3.90L) • 5.0 kg 327-47-105 2.41 US GAL (9.12L) • 12.5 kg DISCLAIMER: NO WARRANTY, EXPRESS OR IMPLIED, IS MADE IN THIS DOCUMENT. THE PRODUCT IS NOT CLAIMED TO BE MERCHANTABLE OR Rev. 09/2013 FIT FOR ANY PARTICULAR PURPOSE. User and certified Kemper System America, Inc. (KSA) applicators determine suitability only. See individual KSA product data sheets, MSDS sheets, guide specifications and details for complete information regarding the suitability, application and handling of KSA products.